Sql Server 导出数据库表结构的SQL查询语句

 --导出数据库所有表

 SELECT
      表名       = Case When A.colorder=1 Then D.name Else '' End,
      表说明     = Case When A.colorder=1 Then isnull(F.value,'') Else '' End,
      字段序号   = A.colorder,
      字段名     = A.name,
      字段说明   = isnull(G.[value],''),
      标识       = Case When COLUMNPROPERTY( A.id,A.name,'IsIdentity')=1 Then '√'Else '' End,
      主键       = Case When exists(SELECT 1 FROM sysobjects Where xtype='PK' and parent_obj=A.id and name in (
                       SELECT name FROM sysindexes WHERE indid in( SELECT indid FROM sysindexkeys WHERE id = A.id AND colid=A.colid))) then '√' else '' end,
      类型       = B.name,
      占用字节数 = A.Length,
      长度       = COLUMNPROPERTY(A.id,A.name,'PRECISION'),
      小数位数   = isnull(COLUMNPROPERTY(A.id,A.name,'Scale'),0),
      允许空     = Case When A.isnullable=1 Then '√'Else '' End,
      默认值     = isnull(E.Text,'')
  FROM
      syscolumns A
  Left Join
      systypes B
  On
      A.xusertype=B.xusertype
  Inner Join
      sysobjects D
  On
      A.id=D.id  and D.xtype='U' and  D.name<>'dtproperties'
  Left Join
      syscomments E
  on
      A.cdefault=E.id
  Left Join
  sys.extended_properties  G
  on
      A.id=G.major_id and A.colid=G.minor_id
  Left Join

  sys.extended_properties F
  On
      D.id=F.major_id and F.minor_id=0
      --where d.name='OrderInfo'    --如果只查询指定表,加上此条件
  Order By
      A.id,A.colorder